Diane Sawyer sat down with Mark Zuckerberg for an ABC World News segment Wednesday night, and chatted with the Facebook CEO about hitting the 500 million user milestone, the perks that come with working at Facebook (there's a laundry room!), and took a few moments to answer some users' questions. When the subject of a "dislike" button came up (which is something an astounding 85 percent of you are wanting), Zuckerberg said that they'd consider adding it in if that's what users really want. Let's keep our fingers crossed, shall we? Take a look a the entire clip after the jump.